圆锥销连接件的销孔加工时应一同钻绞，钻孔时按小头直径选用钻头

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问题单项选择题

圆锥销连接件的销孔加工时应一同钻绞，钻孔时按小头直径选用钻头，绞孔时绞刀的锥度应为（）。

A.1：20

B.1：30

C.1：40

D.1：50

答案

参考答案：D

单项选择题 A1型题

肾结核晚期合并膀胱挛缩时，膀胱容量<50ml，应想到有对侧肾积水的可能。在辅助检查中不应选择（）

A.逆行肾盂造

B.IVU

C.B超

D.肾穿刺造影

E.CT

选择题

But for the help of my English teacher, I the first prize in the English Writing Competition.[ ]

A. would not win

B. would not have won

C. would win

D. would have won